Improvement in self-acting felt-guides for paper-making machines



UNITED STATES lPATENT OFFICE.

THEODORE BAKER, OF STILLVVATER, YORK.

IMPROVEMENT IN SELF-ACTING FELT-GUIDES FOR PAPER-MAKING MACHINES.

Specification `forming part of Letters Patent No. 43,280, dated June 28,1864.

To all whom it may concern.-

Beit known that I, THEoDoRE BAKER, of Stillwater, in the county ofSaratoga and State of N ew York, have invented a new and usefulimprovement in a self-acting guide for the felt cloths, wire cloths, andbolts of paper making and other machinery where the same may be used;land I do hereby declare that the following` is a full, clear, and exactdescription ot' the construction and operation of the same, referencebeing had to the drawings making a part of this speciiication, in whichvFigure 1 is a perspective view of a frame containing, among otherthings, my improvement. Fig. 2 is a perspective view of the same, withcertain parts removed, the more clearly to show the remainder. Fig. 3represents my improved devices detached from the main fratrie, and Figs.4 and 5 are detailed views.

The perspective, Fig. 1, is a portion of a paper-making machine, withits rolls and felt cloth.

H is the frame.

A A are cams on opposite sides oi' the frame Il, having theirperipheries rounded upward to facilitate the passage of the edges of thefelt beneath them, as hereinafter explained. Said cams A` A are attachedto vthe tops of the posts F F and adjustable on the saine by setscrewsin their centers. FFare posts supporting the cams A A and arms G G andresting in the iianged sockets D D loosely.

B B are universal journal-boxes pivoted on and supported by the arms G Gand carrying the journals of the roll C.

E is a rod connecting the cams A A, keeping them in the same position inrelation to each other, and moving one whenever the other is moved.

J is the felt cloth, moving over the rolls in the direction indicated bythe arrows.

The cams A A are adjusted to felts of dif ferent widths by bringing upthe narrow or wide part of the cam to the edge of the felt.

Operation: Now, as the felt J is-from the unequal. wear of the rolls ortheir journals, or from the unequal contraction and expansion ot' thefelts ruiming in water, steam, or-hot air ot' diierent and varyingdegrees of heat and saturation-inclined to vary from side to side otlthe machine in moving over the guideroll O in the direction indicated bythe arrows in Fig. 3, and inclines to either ofthe cams A,

its edge will run under the rounded edge of the cam A, and by its tllingthe space between the cam A and revolving-roll -O will cause the cam tomove by the said friction or pressure, changing at the same time theposition of the guide-roll O through the medium of the journal-box B,arm G, and post F, and bythe peculiar shape ofthe cams A A. As they aremoved they recede from the felt and immediately relieve it frompressure. When the position ot' the roll has been sufficiently changed,the feltJ will incline to the opposite side and eventually find its truecentral position, thus forming a self-actin g guide, keeping the t'eltsalways true on the machine and avoiding the constant'attention of a manto set the roll.

1 know there has been a self-acting guide invented to work by pressureagainst the edges of the felt, but this injures the feltand will onlyguide a stift' felt; but my improvement will guide the most delicatefelt without injury, as it does not guide by pressing against the edgesof the felt, but by pressure between the guide-roll (l and cam A,connecting them, as by frictional gear, whenever the felt .J runsbetween them.

What I claim, and wish to secure by Letters Patent, is-

The cam A and journal-box B, when used in connection with the guide-rollO as a selfacting guide for felt cloths and wire-cloths of paper-makingand other machineryin its passage over the rolls, in the mannerdescribed, and for the purpose specied.

THEODORE BAKER- Witnesses:

BENJAMIN B. GIFFORD, CHARLES STARRETT.

